3237 Scarier emphasized deletion message & better time in flash message

https://code.google.com/p/otwarchive/issues/detail?id=3237

When saving: "Draft was successfully created. It will be **automatically deleted** on Tue 22 Apr 2014 01:34AM EDT"

When viewing otherwise: "This work is a draft and has not been posted. The draft will be **automatically deleted** on Tue 22 Apr 2014 01:34AM EDT"

On draft chapters: "This is a draft showing what this chapter will look like when it's posted to the Archive. You should probably read the whole thing to check for problems before posting. The chapter draft will be stored until you post or discard it, or until its parent work is deleted (unposted work drafts are **automatically deleted** one month after creation; this chapter's work is scheduled for deletion on Tue 22 Apr 2014 01:34AM EDT )."